Added more samples

4 files changed, 235 insertions, 3 deletions

diff --git a/.sample3.cpp.swp b/.sample3.cpp.swp
new file mode 100644
index 0000000..44c7e09
--- /dev/null
+++ b/.sample3.cpp.swp
diff --git a/sample1.cpp b/sample1.cpp
index d2f17b8..490b0a1 100644
--- a/sample1.cpp
+++ b/sample1.cpp
@@ -22,7 +22,7 @@ int main(int argc, char* argv[]) {
         clearScreen(window, Color(0, 0, 0));
         
         // Draw a grid
-        Color gridColor(50, 50, 70);
+        Color gridColor(255, 255, 255);
         for (int x = 0; x < 800; x += 50) {
             drawLine(window, x, 0, x, 600, gridColor);
         }
@@ -53,7 +53,7 @@ int main(int argc, char* argv[]) {
         drawFilledCircle(window, bounceX, bounceY, 30, Color(100, 200, 255));
 
         int prevX = bounceX + bounceX + time * 20;
-        int prevY = 300 + static_cast<int>(100 * sin(bounceX + time * 20 * 2));
+        int prevY = 300 + static_cast<int>(100 * sin((bounceX + time * 20) * 2));
 
         for (int i = bounceX + time * 20; i > bounceX; i--) {
             int x = bounceX + bounceX + time * 20 - i;
@@ -120,4 +120,4 @@ int main(int argc, char* argv[]) {
     destroyWindow(window);
     
     return 0;
-}
\ No newline at end of file
+}
diff --git a/sample2.cpp b/sample2.cpp
index e69de29..02e1718 100644
--- a/sample2.cpp
+++ b/sample2.cpp
@@ -0,0 +1,102 @@
+#include "graphics.h"
+#include <cmath>
+#include <vector>
+
+struct Vec3 {
+    float x, y, z;
+};
+
+// Rotate point around X axis
+Vec3 rotateX(const Vec3& v, float angle) {
+    float c = std::cos(angle);
+    float s = std::sin(angle);
+    return {
+        v.x,
+        v.y * c - v.z * s,
+        v.y * s + v.z * c
+    };
+}
+
+// Rotate point around Y axis
+Vec3 rotateY(const Vec3& v, float angle) {
+    float c = std::cos(angle);
+    float s = std::sin(angle);
+    return {
+        v.x * c + v.z * s,
+        v.y,
+        -v.x * s + v.z * c
+    };
+}
+
+// Perspective projection
+void project(const Vec3& v, int& x2d, int& y2d, float width, float height) {
+    float distance = 2.0f;        // camera distance
+    float scale = 100.0f;         // zoom factor
+
+    float z = v.z + distance;
+    float factor = scale / z;
+
+    x2d = static_cast<int>(v.x * factor + width / 2);
+    y2d = static_cast<int>(v.y * factor + height / 2);
+}
+
+int main() {
+    const int width = 640;
+    const int height = 480;
+
+    WindowHandle* window = createWindow("3D Spinning Cube", width, height);
+    if (!window) return -1;
+
+    // Cube vertices
+    std::vector<Vec3> vertices = {
+        {-1, -1, -1},
+        { 1, -1, -1},
+        { 1,  1, -1},
+        {-1,  1, -1},
+        {-1, -1,  1},
+        { 1, -1,  1},
+        { 1,  1,  1},
+        {-1,  1,  1}
+    };
+
+    // Cube edges (pairs of vertex indices)
+    std::vector<std::pair<int,int>> edges = {
+        {0,1},{1,2},{2,3},{3,0}, // back face
+        {4,5},{5,6},{6,7},{7,4}, // front face
+        {0,4},{1,5},{2,6},{3,7}  // connecting edges
+    };
+
+    float angle = 0.0f;
+
+    while (!windowShouldClose(window)) {
+        pollEvents(window);
+        clearScreen(window, Color(0, 0, 0)); // RGB 20, 20, 30
+
+        std::vector<Vec3> transformed;
+
+        // Rotate cube
+        for (const auto& v : vertices) {
+            Vec3 r = rotateX(v, angle);
+            r = rotateY(r, angle * 0.7f);
+            transformed.push_back(r);
+        }
+
+        // Draw edges
+        for (const auto& edge : edges) {
+            int x1, y1, x2, y2;
+
+            project(transformed[edge.first], x1, y1, width, height);
+            project(transformed[edge.second], x2, y2, width, height);
+
+            drawLine(window, x1, y1, x2, y2, Color(255, 255, 255)); // RGB 0 255 180
+        }
+
+        swapBuffers(window);
+
+        angle += 0.01f;
+        delay(16); // ~60 FPS
+    }
+
+    destroyWindow(window);
+    return 0;
+}
diff --git a/sample3.cpp b/sample3.cpp
new file mode 100644
index 0000000..70c1e13
--- /dev/null
+++ b/sample3.cpp
@@ -0,0 +1,130 @@
+#include "graphics.h"
+#include <cmath>
+#include <vector>
+#include <cstdlib>
+
+struct Vec3 {
+    float x, y, z;
+};
+
+Vec3 rotateX(const Vec3& v, float angle) {
+    float c = std::cos(angle);
+    float s = std::sin(angle);
+    return { v.x, v.y * c - v.z * s, v.y * s + v.z * c };
+}
+
+Vec3 rotateY(const Vec3& v, float angle) {
+    float c = std::cos(angle);
+    float s = std::sin(angle);
+    return { v.x * c + v.z * s, v.y, -v.x * s + v.z * c };
+}
+
+Vec3 rotateZ(const Vec3& v, float angle) {
+    float c = std::cos(angle);
+    float s = std::sin(angle);
+    return { v.x * c - v.y * s, v.x * s + v.y * c, v.z };
+}
+
+void project(const Vec3& v, int& x2d, int& y2d, float width, float height, float zoom) {
+    float distance = 4.0f;
+    float z = v.z + distance;
+    float factor = zoom / z;
+
+    x2d = static_cast<int>(v.x * factor + width / 2);
+    y2d = static_cast<int>(v.y * factor + height / 2);
+}
+
+struct Star {
+    float x, y, z;
+};
+
+int main() {
+    const int width = 800;
+    const int height = 600;
+
+    WindowHandle* window = createWindow("DEMOSCENE CUBE", width, height);
+    if (!window) return -1;
+
+    std::vector<Vec3> vertices = {
+        {-1,-1,-1},{1,-1,-1},{1,1,-1},{-1,1,-1},
+        {-1,-1,1},{1,-1,1},{1,1,1},{-1,1,1}
+    };
+
+    std::vector<std::pair<int,int>> edges = {
+        {0,1},{1,2},{2,3},{3,0},
+        {4,5},{5,6},{6,7},{7,4},
+        {0,4},{1,5},{2,6},{3,7}
+    };
+
+    // Starfield
+    const int starCount = 300;
+    std::vector<Star> stars;
+    for (int i = 0; i < starCount; ++i) {
+        stars.push_back({
+            ((rand() % 200) - 100) / 10.0f,
+            ((rand() % 200) - 100) / 10.0f,
+            (rand() % 100) / 10.0f
+        });
+    }
+
+    float time = 0.0f;
+
+    while (!windowShouldClose(window)) {
+        pollEvents(window);
+
+        // Pulsing background
+        int bg = static_cast<int>((std::sin(time * 0.5f) + 1.0f) * 20);
+        clearScreen(window, Color(bg, 0, bg + 20));
+
+        // --- STARFIELD ---
+        for (auto& star : stars) {
+            star.z -= 0.05f;
+            if (star.z <= 0.1f)
+                star.z = 10.0f;
+
+            int sx = static_cast<int>((star.x / star.z) * 200 + width/2);
+            int sy = static_cast<int>((star.y / star.z) * 200 + height/2);
+
+            if (sx >= 0 && sx < width && sy >= 0 && sy < height)
+                drawPixel(window, sx, sy, Color(255,255,255));
+        }
+
+        // Color cycling (rainbow)
+        int r = static_cast<int>((std::sin(time) + 1) * 127);
+        int g = static_cast<int>((std::sin(time + 2) + 1) * 127);
+        int b = static_cast<int>((std::sin(time + 4) + 1) * 127);
+
+        float zoom = 150.0f + std::sin(time) * 50.0f;
+
+        // --- MULTI-CUBE EFFECT ---
+        for (int c = 0; c < 3; ++c) {
+
+            float offset = c * 2.5f - 2.5f;
+
+            std::vector<Vec3> transformed;
+
+            for (const auto& v : vertices) {
+                Vec3 r3 = rotateX(v, time + c);
+                r3 = rotateY(r3, time * 0.7f + c);
+                r3 = rotateZ(r3, time * 0.5f);
+                r3.x += offset;
+                transformed.push_back(r3);
+            }
+
+            for (const auto& edge : edges) {
+                int x1, y1, x2, y2;
+                project(transformed[edge.first], x1, y1, width, height, zoom);
+                project(transformed[edge.second], x2, y2, width, height, zoom);
+                drawLine(window, x1, y1, x2, y2, Color(r, g, b));
+            }
+        }
+
+        swapBuffers(window);
+
+        time += 0.02f;
+        delay(16);
+    }
+
+    destroyWindow(window);
+    return 0;
+}